diff --git a/tests/unit/security/transform.t.cpp b/tests/unit/security/transform.t.cpp
index 07958cd..901839b 100644
--- a/tests/unit/security/transform.t.cpp
+++ b/tests/unit/security/transform.t.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2013-2018 Regents of the University of California.
+ * Copyright (c) 2013-2019 Regents of the University of California.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -65,9 +65,6 @@
   transform::DigestFilter* digestFilter = nullptr;
   BOOST_CHECK(digestFilter == nullptr);
 
-  transform::HmacFilter* hmacFilter = nullptr;
-  BOOST_CHECK(hmacFilter == nullptr);
-
   transform::BlockCipher* blockCipher = nullptr;
   BOOST_CHECK(blockCipher == nullptr);
 
diff --git a/tests/unit/security/transform/hmac-filter.t.cpp b/tests/unit/security/transform/hmac-filter.t.cpp
deleted file mode 100644
index 650c024..0000000
--- a/tests/unit/security/transform/hmac-filter.t.cpp
+++ /dev/null
@@ -1,111 +0,0 @@
-/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/*
- * Copyright (c) 2013-2018 Regents of the University of California.
- *
- * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
- *
- * ndn-cxx library is free software: you can redistribute it and/or modify it under the
- * terms of the GNU Lesser General Public License as published by the Free Software
- * Foundation, either version 3 of the License, or (at your option) any later version.
- *
- * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
- * PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.
- *
- * You should have received copies of the GNU General Public License and GNU Lesser
- * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
- * <http://www.gnu.org/licenses/>.
- *
- * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
- */
-
-#include "ndn-cxx/security/transform/hmac-filter.hpp"
-
-#include "ndn-cxx/encoding/buffer-stream.hpp"
-#include "ndn-cxx/security/transform/buffer-source.hpp"
-#include "ndn-cxx/security/transform/step-source.hpp"
-#include "ndn-cxx/security/transform/stream-sink.hpp"
-
-#include "tests/boost-test.hpp"
-
-namespace ndn {
-namespace security {
-namespace transform {
-namespace tests {
-
-BOOST_AUTO_TEST_SUITE(Security)
-BOOST_AUTO_TEST_SUITE(Transform)
-BOOST_AUTO_TEST_SUITE(TestHmacFilter)
-
-static const uint8_t key[] = {
-  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
-  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
-};
-static const uint8_t data[] = {
-  0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
-  0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
-};
-static const uint8_t digest[] = {
-  0x9f, 0x3a, 0xa2, 0x88, 0x26, 0xb3, 0x74, 0x85,
-  0xca, 0x05, 0x01, 0x4d, 0x71, 0x42, 0xb3, 0xea,
-  0x3f, 0xfb, 0xda, 0x5a, 0x35, 0xbf, 0xd2, 0x0f,
-  0x2f, 0x9c, 0x8f, 0xcc, 0x6d, 0x30, 0x48, 0x54
-};
-
-BOOST_AUTO_TEST_CASE(Basic)
-{
-  OBufferStream os;
-  bufferSource(data, sizeof(data)) >> hmacFilter(DigestAlgorithm::SHA256, key, sizeof(key)) >> streamSink(os);
-
-  ConstBufferPtr buf = os.buf();
-  BOOST_CHECK_EQUAL_COLLECTIONS(digest, digest + sizeof(digest), buf->begin(), buf->end());
-}
-
-BOOST_AUTO_TEST_CASE(StepByStep)
-{
-  OBufferStream os;
-  StepSource source;
-  source >> hmacFilter(DigestAlgorithm::SHA256, key, sizeof(key)) >> streamSink(os);
-  source.write(data, 1);
-  source.write(data + 1, 2);
-  source.write(data + 3, 3);
-  source.write(data + 6, 4);
-  source.write(data + 10, 5);
-  source.write(data + 15, 1);
-  source.end();
-
-  ConstBufferPtr buf = os.buf();
-  BOOST_CHECK_EQUAL_COLLECTIONS(digest, digest + sizeof(digest), buf->begin(), buf->end());
-}
-
-BOOST_AUTO_TEST_CASE(EmptyInput)
-{
-  const uint8_t digest[] = {
-    0x07, 0xEF, 0xF8, 0xB3, 0x26, 0xB7, 0x79, 0x8C,
-    0x9C, 0xCF, 0xCB, 0xDB, 0xE5, 0x79, 0x48, 0x9A,
-    0xC7, 0x85, 0xA7, 0x99, 0x5A, 0x04, 0x61, 0x8B,
-    0x1A, 0x28, 0x13, 0xC2, 0x67, 0x44, 0x77, 0x7D
-  };
-
-  OBufferStream os;
-  StepSource source;
-  source >> hmacFilter(DigestAlgorithm::SHA256, key, sizeof(key)) >> streamSink(os);
-  source.end();
-
-  ConstBufferPtr buf = os.buf();
-  BOOST_CHECK_EQUAL_COLLECTIONS(digest, digest + sizeof(digest), buf->begin(), buf->end());
-}
-
-BOOST_AUTO_TEST_CASE(InvalidAlgorithm)
-{
-  BOOST_CHECK_THROW(HmacFilter(DigestAlgorithm::NONE, key, sizeof(key)), Error);
-}
-
-BOOST_AUTO_TEST_SUITE_END() // TestHmacFilter
-BOOST_AUTO_TEST_SUITE_END() // Transform
-BOOST_AUTO_TEST_SUITE_END() // Security
-
-} // namespace tests
-} // namespace transform
-} // namespace security
-} // namespace ndn